<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta http-equiv="X-UA-Compatible" content="ie=edge" />
    <title>Document</title>
    <style>
      h2,
      p {
        margin: 0;
      }

      .box {
        margin: 30px auto;
        width: 300px;
      }

      #user,
      #message {
        box-sizing: border-box;
        width: 300px;
        border: 1px solid #000;
        padding: 10px;
        height: 100px;
        resize: none;
        display: block;
      }

      #user {
        padding: 0 10px;
        height: 30px;
        margin-bottom: 10px;
      }

      #btn {
        display: block;
        margin: 10px auto;
        width: 60%;
        height: 40px;
      }

      #list {
        border-top: 1px solid #000;
        padding: 10px 0 0;
        margin: 0;
        list-style: none;
      }

      #list li {
        position: relative;
        font: 14px/30px "宋体";
        border-bottom: 1px solid #000;
        padding: 0 15px;
        overflow: hidden;
      }

      .clos {
        position: absolute;
        right: 5px;
        top: 10px;
      }

      .clos2 {
        position: absolute;
        right: 5px;
        top: 30px;
      }

      .replay {
        position: absolute;
        right: 5px;
        top: 35px;
      }

      .mask {
        width: 100vw;
        height: 100vh;
        background: black;
        opacity: 0.3;
        position: absolute;
        left: 0;
        top: 0;
        display: none;
      }

      .comfirm {
        width: 200px;
        height: 120px;
        background: white;
        text-align: center;
        position: absolute;
        left: 50%;
        top: 30%;
        border-radius: 5px;
        transform: translate(-50%, -50%);
        overflow: hidden;
        display: none;
      }

      .comfirm button {
        /* position: absolute; */
        /* right: 10px; */
        float: right;
        margin-top: 20px;
        margin-right: 10px;
      }
    </style>
  </head>

  <body>
    <div class="box">
      <input type="text" id="user" value="小明" />
      <textarea id="message">我就是传说中的无敌小明</textarea>
      <button class="sortbtn">排序</button>
      <button id="btn">提交留言</button>
      <ul id="list">
        <li style="height: auto">
          <h2 class="user">小王说:</h2>
          <p>呼叫无敌小明</p>

          <a href="javascript:;" class="clos">删除</a>
          <a href="javascript:;" class="clos2">回复</a>
        </li>
        <li style="height: auto">
          <h2 class="user">老师说:</h2>
          <p>小明滚出去</p>
          <p>回复的内容</p>
          <a href="javascript:;" class="clos">删除</a>
        </li>
      </ul>
    </div>
    <script>
      var userEle = document.querySelector("#user");
      var messageEle = document.querySelector("#message");
      var subBtn = document.querySelector("#btn");

      var listEle = document.querySelector("#list");

      var sortEle = document.querySelector(".sortbtn");
      // var messageArr = [{
      //     user:"小王",
      //     message:"hello",
      //     time:""
      // },{
      //     user:"小王",
      //     message:"hello",
      //     time:""
      // }];
      var messageArr = [];

      subBtn.onclick = function () {
        let user = userEle.value;
        var message = messageEle.value;
        console.log(user, message);
        let obj = {
          user,
          message,
          time: new Date().getTime(),
        };
        messageArr.push(obj);
        // console.log(messageArr)
        renderDom(messageArr);
      };

      // 排序；
      var flag = true;
      sortEle.onclick = function () {
        // 先排数据；
        if (flag) {
          messageArr.sort(function (a, b) {
            return a.time - b.time;
          });
        } else {
          messageArr.sort(function (a, b) {
            return b.time - a.time;
          });
        }
        flag = !flag;

        // console.log(messageArr);
        renderDom(messageArr);
      };

      //   var flag = true;
      //   sortEle.onclick = function () {
      //     if (flag) {
      //       messageArr.sort(function (a, b) {
      //         return a.time - b.time;
      //       });
      //     } else {
      //       messageArr.sort(function (a, b) {
      //         return b.time - a.time;
      //       });
      //     }
      //     flag = !flag;
      //     renderDom(messageArr);
      //   };

      listEle.innerHTML = "";
      function renderDom(data) {
        listEle.innerHTML = "";
        data.forEach((item) => {
          let liEle = document.createElement("li");
          liEle.style.height = "auto";
          liEle.innerHTML = `
            <h2 class="user">${item.user}说:</h2>
            <p>${item.message}</p>
            <p>回复的内容</p>
            <a href="javascript:;" class="clos">删除</a>
            `;
          listEle.appendChild(liEle);
        });
      }

      // 1.数据驱动  2.时间（时间戳）排序；
    </script>
  </body>
</html>
